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河北省乐亭县徐家店乡于1993～1995年实行马铃薯与玉米间作套种栽培,马铃薯平均亩产2750公斤(按5:1折粮,合粮550公斤),玉米亩产625公斤,两茬合计1175公斤,纯收入2841元,其栽培技术是: 一、选好地块薯田应选择疏松、肥沃的沙壤土为宜。土壤封冻前整地,每亩撒施有机肥6～8方,深翻23～25厘米,然后擦细耙平,在夜冻昼消时浇足封冻水。
Xujiaodian Township, Laoting County, Hebei Province, implemented intercropping cultivation of potatoes and maize from 1993 to 1995. The average yield of potato was 2750 kg (5: 1 fold of grain, 550 kg of grain), 625 kg of mu per mu, Total 1175 kilograms, 2841 yuan net income, its cultivation techniques are: First, select the land potato should choose loose, fertile sandy loam is appropriate. Before soil freezing, the soil is sprinkled with organic fertilizer 6 ~ 8 square meters per acre, deep plowing 23 ~ 25 cm, and then rub the fine rake flat, pour the foot frozen frozen water in the day and night when it is frozen.